Biological insecticide for preventing insect pest of orchard as well as preparation method and application method thereof

Abstract

The invention discloses a biological insecticide for preventing insect pest of an orchard as well as a preparation method and application method thereof. The biological insecticide is prepared by virtue of the following preparation method: slicing and decocting radix stemonae, filtering to obtain a radix stemonae solution, and diluting the radix stemonae solution by using water to obtain the diluted radix stemonae solution; inoculating and culturing beauveria bassiana to obtain a beauveria bassiana culture solution, cutting off the stems and leaves of the stemona, grinding into juice, uniformly mixing, sealing and anaerobically fermenting in a fermentation tank together with the beauveria bassiana culture solution, filtering a fermented product to obtain a fermented solution, and filteringto obtain the fermented filter residues; and diluting the fermented solution by using water to obtain the diluted fermented solution. The application method comprises the steps: mixing the diluted radix stemonae solution and diluted fermented solution according to a volume ratio of 1: 1; and spraying the mixed solution to fruit trees or pouring the mixed solution into original holes of the fruittree trunks or pouring the mixed solution into artificial hole of the fruit trees, or uniformly mixing, and uniformly mixing with the fermented filter residues and earth, and sealing the holes of thefruit tree trunk or smearing the mixture onto the fruit tree trunk.

Description

technical field [0001] The invention relates to a biopesticide for preventing orchard pests. In addition, the invention also relates to a preparation method of a biopesticide for controlling orchard pests. In addition, the present invention also relates to a method for using a biopesticide for preventing orchard pests. Background technique [0002] Long beetle is the general term for polyphagous orchard insects. It is the main pest in forestry production, crop cultivation and building timber, and it is also one of the main pests that harm orchards. Orchards have chewing mouthparts, strong palate, and strong gnawing ability. Adults gnaw on new branches, bark, branches, young fruits, and fruits. After being gnawed, strip scars will be left. Seriously, the bark of the branches is gnawed off, causing the fruit-bearing branches to break and die. And the adults will lay eggs in the gaps of the branches and in the bark. After the eggs hatch, the larvae will eat down along the xy...

AI Technical Summary

Problems solved by technology

Seriously, the bark of the branches is gnawed off, causing the fruit-hanging branches to break and die

And the adults will lay eggs in the gaps of the branches and in the bark. After the eggs hatch, the larvae will eat down along the xylem and pith and reach the roots, which can lead to poor plant growth, premature tree vigor, and seriously affect the yield of fruits. In severe cases, the whole plant may die

Adults gnaw around and lay eggs, and larvae live inside trees, so it is difficult to control

At present, the main control method is chemical control. Although the killing rate is high and the control effect is good, it is easy to pollute the soil, air, and fruit, and the large amount of chemical residues affects the health of eating. At the same time, it is easy to cause drug resistance in orchards.

There is another method of trapping with bait wood, which requires planting bait wood, but the workload is heavy and the effect is not obvious